Electric strike

a technology of electric strike and structure, which is applied in the direction of construction, building locks, and fastening means, can solve the problems of complex construction of such a device, considerable complexity of the operation procedure, and complex structure described above, and achieves the effect of easy change, cost-effective assembly, and easy adjustment and access

Inactive Publication Date: 2010-05-27
HUANG JIH HUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]An objective of the present invention is to provide an electric strike structure of which the door security mode is changeable, and more particularly to an electric strike structure of which the door security mode can be changed easily by an ordinary operator from outside.
[0009]Another objective of the present invention is to provide an electric strike structure of which the door security mode is changeable and requires no complex machining.
[0010]Furthermore, another objective of the present invention is to provide an electric strike structure of which the door security mode is easily adjustable and accessible, cost-effective in assembly and can be stably operated.

Problems solved by technology

However, the structure described above is complicated.
The operation procedure above is considerably complicated.
If the structure is not properly designed to constrain the solenoid and the blocking element to move in a linear direction, a part resisted against by the eccentric wheel may deflect upwards or downwards from the friction, thereby leading to instability.
Furthermore, the construction of such a device is complicated, and the manufacturing and assembling of its parts is not cost effective.

Method used

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first embodiment

[0036]FIG. 3 is an exploded view of the structure of an electric strike according to the present invention. Referring to FIG. 3, the electric strike includes a base 10, a shell 20, a lever 30, and an electromagnetic actuating device 40. The base 10 and the shell 20 are fixed to an opposite position with respect to each other to form a housing, in which a space is formed to accommodate the lever 30 and enable it to rotate a particular angle or telescope a distance. The space may be formed by a chamber formed in the base 10 and a recess 24 formed in the shell 20, and at least enables a locking plate 34 of the lever 30 to protrude from the base 10 to face a surface of a corresponding lock mouth in the doorframe or door panel when the electric strike is in a locked state. As such, the locking plate 34 may be engaged with the corresponding lock mouth in the doorframe or door panel to lock the door. The recess 24 of the shell 20 is used to accommodate the electromagnetic actuating device ...

second embodiment

[0044]In the present invention, the adjustment device may also be a mechanism as shown in FIG. 9 and FIG. 10. The adjustment device 520 includes a stick 521 and a pin 522. On the surface of the stick 521 facing outward, there is a tool notch 523 used for operating by a hand tool from outside. The adjustment device 520 is rotationally disposed on the shell 20, and may move axially parallel to the longitudinal axis X of the electromagnetic actuating device 40. After penetrating through the round hole 22 in the shell 20 in the assembly process, the stick 521 fixes the pin 522 into a fixing hole 524 in the side surface of the stick 521, such that the entire adjustment device presents an “L” shape. A flat step is provided at a place where the recess 24 of the shell 20 joins with the hole 22 as shown in FIG. 11A, for providing a two-stage locking position for the pin 522. When the stick 521 is moved in the direction parallel to the axis X and then rotated by a screw driver externally to r...

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PUM

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Abstract

An electric strike that facilitates setting a door security mode includes a housing, a lever, an electromagnetic actuating device, and an adjustment device adapted to be fitted through the housing formed with a chamber and a recess. The lever is able to rotate in the chamber or stretch towards outside and has a first locking device. The electromagnetic actuating device can be moved linearly in the recess and is connected to a second locking device. The adjustment device can be moved parallel to the longitudinal axis of the electromagnetic actuating device with one of its ends abutting against the electromagnetic actuating device and the other end able to be manipulated from outside of the electric strike to change the door security mode, thereby the second locking device is moved to a locked position or an unlocked position with respect to the first locking device when the power is off.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a structure of an electric strike and more particularly, to a structure of an electric strike in which a set mode of the electric strike can be conveniently adjusted from the outside of the electric strike, such that the electric strike is either in a locked or unlocked state when the power is off.[0003]2. Description of the Prior Art[0004]An electric strike is commonly used to control the ingress and egress to buildings. The electric strike is provided with an electromagnetic actuating device that can convert electricity to mechanical force. In general, the electromagnetic actuating device is either an electrically driven motor or a solenoid device. With the power on or off, the driving device enables the latch of a door to be lock or unlock.[0005]Generally, an electric strike has two modes. One mode is called “fail-secure,” where the electric strike is not powered on and a “locked” sta...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E05B15/02
CPCE05B47/0047E05B2047/0076E05B2047/0073E05B63/0065Y10T292/699
Inventor HUANG, JIH-HUI
Owner HUANG JIH HUI
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